Container blank



FIG. 1 is a top plan view of a container blank showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a side elevational view;

FIG. 4 is a rear elevational view; and

FIG. 5 is a bottom plan view.

The dash lines in FIGS. 2 and 4 represent score lines.

FIG. 2 is shaded to show contrasting color. 

The ornamental design for a container blank, as shown and described. 